Potassium Hydroxide → HCID 20304493, Verbindung
Reaktionsgleichung
[C:1]([C:4]1[CH:9]=[CH:8][C:7]([CH:10]2[O:20][CH:11]2[C:12]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)=[O:13])=[CH:6][CH:5]=1)([OH:3])=[O:2].[OH-].[K+]>C(O)C>[C:1]([C:4]1[CH:5]=[CH:6][C:7]([CH2:10][C:11](=[O:20])[C:12]([C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=2)=[O:13])=[CH:8][CH:9]=1)([OH:3])=[O:2]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of 5.63 g of 3-(4-carboxyphenyl)-1-phenyl-2,3-epoxy-1-propanone in 100 ml of ethanol at 85°-90°C was added a solution of 6 g of potassium hydroxide in 100 ml of ethanol with stirring over 5 min. The reaction mixture was heated at 85°-90°C for 5 min. and then allowed to cool to room temperature. The solution was evaporated to dryness and the residue was dissolved in 300 ml of ice-water and acidified with 125 ml of hydrochloric acid. After stirring for 30 min., the precipitate was collected and washed with water. The precipitate was dissolved in 600 ml of ethyl acetate and the solution was dried and filtered. The filtrate was evaporated to give 5.63 g (100%) of 3-(4-carboxyphenyl)-1-phenyl-1,2-propanedione as a yellow solid.